Kabira Evangel

Oracle Text

Whenever Kabira Evangel or another Ally enters the battlefield under your control, you may choose a color. If you do, Allies you control gain protection from the chosen color until end of turn.

Card Rulings

10/1/2009 You choose a color (or choose not to) as the triggered ability resolves. Once the color is chosen, it’s too late for players to respond.